The Sketch Properties dialog box allow you to edit M or Z values for selected features. The edit sketch, however, does not support the editing of point shapes.
Editing of the M and Z values for point features requires a custom tool that reads the attributes of point features.
Solution or Workaround
The ArcObjects Online site has a developer sample for editing tool that you can modify. To download this tool:
- Click the link in the Related Information section below.
- Expand Samples > Editing > Edit Tools > Point Editor.
- Click the Download Now link.